Slightly magnetic. Decomposed by aqua regia with the separation of
tungstic oxide. Forms pseudomorphs after Scheelite. Often more or less completely
replaced by Scheelite. Pseudomorphs of Quartz, Hematite, Marcasite, and
Kaolinite after Wolframite noted.

Wolframite
is chemically intermediate between Hübnerite and Ferberite
with unspecified chemical composition. Wolframite is
actually a series between these two minerals. Hübnerite
is the Manganese rich end member and Ferberite is the
iron rich end member. Wolframite is the name of the
series and the name applied to indistinguishable specimens
and specimens intermediate between the two end members.
Only specimens that are more than 80% pure manganese
are called Hübnerite and only specimens more than 80%
pure iron are called Ferberite.

There
are many localities worldwide for Worlframite. Possibly
the largest and best specimens are from the Guangdong
and Hunan Provinces,
China.